io.druid.indexing.kafka.KafkaPartitions.java Source code

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Here is the source code for io.druid.indexing.kafka.KafkaPartitions.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package io.druid.indexing.kafka;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;

import java.util.Map;
import java.util.Objects;

public class KafkaPartitions {
    private final String topic;
    private final Map<Integer, Long> partitionOffsetMap;

    @JsonCreator
    public KafkaPartitions(@JsonProperty("topic") final String topic,
            @JsonProperty("partitionOffsetMap") final Map<Integer, Long> partitionOffsetMap) {
        this.topic = topic;
        this.partitionOffsetMap = ImmutableMap.copyOf(partitionOffsetMap);

        // Validate partitionOffsetMap
        for (Map.Entry<Integer, Long> entry : partitionOffsetMap.entrySet()) {
            Preconditions.checkArgument(entry.getValue() >= 0,
                    String.format("partition[%d] offset[%d] invalid", entry.getKey(), entry.getValue()));
        }
    }

    @JsonProperty
    public String getTopic() {
        return topic;
    }

    @JsonProperty
    public Map<Integer, Long> getPartitionOffsetMap() {
        return partitionOffsetMap;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        KafkaPartitions that = (KafkaPartitions) o;
        return Objects.equals(topic, that.topic) && Objects.equals(partitionOffsetMap, that.partitionOffsetMap);
    }

    @Override
    public int hashCode() {
        return Objects.hash(topic, partitionOffsetMap);
    }

    @Override
    public String toString() {
        return "KafkaPartitions{" + "topic='" + topic + '\'' + ", partitionOffsetMap=" + partitionOffsetMap + '}';
    }
}